Water-heating attachment for furnaces.



1N0. 815,273. PATENTED MAR. 13, 1906.

' v G. B. DIXON.

WATER HEATING ATTAGHMENT'POR FURNACES.

APPLICATION FILED FEB.16. 1905.

' j /7 17. 5 m J UNITED STATES PATENT I GEORGE E. ixon-0 CHICAGO,ILLINOIS. WAT ER-d-IEATING ATTACHMENT FORFURNACESl Specification ofLetters Patent.

Patented March 13, 1906.

Application filed February 16, 1905. Serial No. 245,861.

description thereof, reference being had to" the accompanying drawingsof this specification.

' One of'the objects of my invention is. to

which form part provide a water-heating attachment for furnaces which issimple in construction, efficient in o 'eration, and of reat durability.

In'the rawings I have s own, in Figure 1, the application of a deviceembodying my invention in a diagrammatically-illustrated furnace. jiglisasection offline 2 2 of Fig.

- 3, and Fig. 3 is an elevation of the bottom of my device.

Throughout the drawings like characters of reference refer always tolike parts.

The water-heater, or, as I term it in the trade, the heat-economizer,comprises a shell 5, preferably of circular form in plan and verticallyrelatively thin, so as to form a relatively short cylinder, said shellpreferably providing a fiat top wall 6, a cylindrical side wall 7, acylindrical inner wall 8, and a bot-- tom wall 9, of configuration to bemore specifically described, forming an annular chamber. The bottomwall9 is interrupted by parallel transverse ribs 11, separated bysuitable spaces 12, and eac cated at 10, opening into and constituting acontinuation of the chamber 10. Preferably the walls 6, 7, 8, and 9 arewalls of substantially the same thickness, although they may be variedin thickness, if required. From the inner circular wall 8 projects ribs13 13, preferably solid and of tapering form, all converging toward thevertical aXis of the casing, said ribs being separated at suitabledistffiaces to leave s aces 14 therebetween and all sto ping, prefrably, at equal distances'from t e axis of the casing to leave a centralfree opening 15. Inlet and outlet apertures 16 and 17,

ollewrib'fas indipreferably screw threaded to receive suitable piping,are provided at opposite sides of the shell, the inlet-opening 16' beingpreferably near the bottom thereof and the outletopening 17 being nearthe top.

In use the device is suspended in' the fur-' nace by the inlet andoutlet pipes 18 and 19, threaded into the apertures 16 and 17 andfinding bearing in apertures a a in the side side walls a a of thefurnace A, the economizerbeing located at a suitable point above thefurnace-grate .B. It will be apparent that the heat of the fire upon thegrate B impinges upon the larger lower surface of the ribs 11 andrapidly heats the water therein and that the gases of combustion escapethrough the central opening 15 andthe spaces 14, communicating heat tothe-large exposedsurfaoes of the vertical ribs 13 and through said ribsto the water within the chamber 10. By this arrangement I provide a verysimple and efficient water heater which may be readily attached tofurnaces and which I find in practice does not lower the eflioiency ofthe furnace for its usual work to any appreciable degree. Obvidusly thepiping 18 19 may be run to any suitable source of the water-suppl and,if desired, .to any suitable receptacle or the heated water. Theseparts, however, are not shown. A

Having thus described my invention, what 'I claim, and desire to secureby Letters Patent of the United States, is

As an article of manufacture, a waterheater for furnaces comprising theannular shell of heat-conductive material provided with the hollow deending ribs 11 on its under side and with tfie converging solid ribs 18surrounding its central opening, substantially as described.

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two witnesses.

' GEORGE E. DIXON. In presence of- GEORGE T. MAY, Jr., MARY F. ALLEN.

